de.upb.swtpra05.group03.crypto
Class SigningKeys

java.lang.Object
  de.upb.swtpra05.group03.crypto.SigningKeys

public class SigningKeys

extends java.lang.Object

helper class to load the signing keys

Version:

$Revision: 1.3 $

Field Summary

protected static int	KEY_SIZE size of key
protected static java.lang.String	KEYGEN_ALGO algorithm used for key generation
protected static java.lang.String	PATH path used for saving the keys

Constructor Summary

SigningKeys()

Method Summary

protected static java.security.KeyPair	generateKeyPair() generates a keypair
static java.security.Key[]	loadKeys(java.lang.String name) loads the keys used for signing from a keys file
static void	main(java.lang.String[] args) creates the keys. only needed for the first time, or to change the keys
protected static void	saveKeys(java.lang.String name, java.security.PublicKey pubKey, java.security.PrivateKey secKey) saves the keys into a file named ${name}.keys

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PATH

protected static final java.lang.String PATH

path used for saving the keys

See Also:

Constant Field Values

KEYGEN_ALGO

protected static final java.lang.String KEYGEN_ALGO

algorithm used for key generation

See Also:

Constant Field Values

KEY_SIZE

protected static final int KEY_SIZE

size of key

See Also:

Constant Field Values

Constructor Detail

SigningKeys

public SigningKeys()

Method Detail

main

public static void main(java.lang.String[] args)
                 throws java.security.NoSuchAlgorithmException,
                        java.io.IOException

creates the keys. only needed for the first time, or to change the keys

Parameters:

args -

Throws:

java.security.NoSuchAlgorithmException

java.io.IOException

generateKeyPair

protected static java.security.KeyPair generateKeyPair()
                                                throws java.security.NoSuchAlgorithmException

generates a keypair

Returns:

keypair

Throws:

java.security.NoSuchAlgorithmException

saveKeys

protected static void saveKeys(java.lang.String name,
                               java.security.PublicKey pubKey,
                               java.security.PrivateKey secKey)
                        throws java.io.IOException

saves the keys into a file named ${name}.keys

Parameters:

name - used for the filename

pubKey -

secKey -

Throws:

java.io.IOException

loadKeys

public static java.security.Key[] loadKeys(java.lang.String name)
                                    throws java.io.IOException,
                                           java.security.NoSuchAlgorithmException,
                                           java.security.spec.InvalidKeySpecException

loads the keys used for signing from a keys file

Parameters:

name - can be shuttle or company(control)

Returns:

public and private key

Throws:

java.io.IOException

java.security.NoSuchAlgorithmException

java.security.spec.InvalidKeySpecException